html,
body {
  height: 100%;
}
ul,
ol,
li {
  list-style: none;
  margin: 0;
  padding: 0;
}
.black {
  color: #000;
}
.fz-18 {
  font-size: 18px;
}
// 全屏容器
.lt-container {
  background-color: #fff;
  position: relative;
  max-width: 640px;
  min-width: 320px;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  //   border: 3px solid red;
  padding: 45px 0 50px 0;
  //   头部
  .lt-header {
    width: 100%;
    height: 45px;
    background-color: red;
    padding: 0 45px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 3;
    a {
      position: absolute;
      left: 0;
      top: 0;
      width: 45px;
      height: 45px;
      background-color: red;
      text-align: center;
      line-height: 45px;
      font-size: 24px;
      color: #fff;
    }
    .search {
      left: auto;
      right: 0;
    }
    h4 {
      text-align: center;
      line-height: 45px;
      color: #fff;
      font-weight: normal;
      margin: 0;
      font-size: 24px;
    }
  }
  //   主体
  .lt-main {
    width: 100%;
    height: 100%;
    z-index: 1;
    position: relative;
    .lt-login-ball {
      position: fixed;
      top: 100px;
      right: 0;
      z-index: 999;
      text-align: center;
      padding-top: 1px;
      background-color: rgba(255, 0, 0, 0.356);
      border-radius: 25px;
      border: 1px solid rgba(255, 0, 0, 0.513);
      width: 50px;
      height: 50px;
      animation: jump 1s linear infinite alternate;
      a {
        display: block;
        color: red;
        width: 100%;
        height: 100%;

        p {
          color: red;
        }
      }
    }
    @keyframes jump {
      from {
        transform: translateY(0);
      }
      to {
        transform: translateY(20px);
      }
    }
  }
  //   底部
  .lt-footer {
    width: 100%;
    height: 50px;
    position: absolute;
    left: 0;
    bottom: 0;
    background-color: red;
    z-index: 2;
    .lt-nav {
      li {
        float: left;
        width: 25%;
        height: 50px;
        text-align: center;
        line-height: 20px;
        a {
          color: #fff;
          display: block;
          width: 100%;
          height: 100%;
          padding: 5px;
          padding-bottom: 0;
          p {
            color: #fff;
            margin: 0;
          }
        }
      }
      li.current > a,
      li.current > a > p {
        color: red;
        background-color: #fff;
      }
    }
  }
}
